Let's not forget how we started. We were writing each other very long messages and today we are both much more fluent in both languages. No book could have brought us that far. Cheers.I am a computer scientist and I also have a small restaurant with my younger sister (she is also already 53). You can come and visit, I will buy you a drink and we could chat a little.Perhaps we are could meet sometime in person, not just via the Internet. Of course, we should still write each other a lot. I will get back to you once I am back in Cologne, and then give you know.